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Allowance for Credit Losses (ACL) - Disaggregated analysis of the changes in allowance for credit losses (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Mar. 01, 2022 | Mar. 31, 2022 | Mar. 31, 2021
Allowance for credit losses |  |  |
Balance at beginning of period |  | $ 301,807 | $ 457,309
Charge-offs |  | (5,490) | (3,374)
Recoveries |  | 3,167 | 3,395
Net (charge-offs) recoveries |  | (2,323) | 21
(Recovery) provision |  | (22,003) | (50,870)
Balance at end of period |  | 300,396 | 406,460
Quantitative allowance |  |  |
Collectively evaluated |  | 288,316 | 367,890
Individually evaluated |  | 8,431 | 4,395
Total quantitative allowance |  | 296,747 | 372,285
Qualitative allowance |  | 3,649 | 34,175
Unfunded Commitment |  |  |
Allowance for credit losses |  |  |
(Recovery) provision |  | (142) | 7,500
Initial PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 9,218 |
Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 13,697 |
Residential Mortgage Sr. |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 47,036 | 63,561
Charge-offs |  | (58) | (120)
Recoveries |  | 394 | 428
Net (charge-offs) recoveries |  | 336 | 308
(Recovery) provision |  | (1,806) | (827)
Balance at end of period |  | 46,002 | 63,042
Quantitative allowance |  |  |
Collectively evaluated |  | 45,805 | 55,336
Individually evaluated |  | 168 | 378
Total quantitative allowance |  | 45,973 | 55,714
Qualitative allowance |  | 29 | 7,328
Residential Mortgage Sr. | Initial PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 84 |
Residential Mortgage Sr. | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 352 |
Residential Mortgage Jr. |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 611 | 1,238
Charge-offs |  | (19) |
Recoveries |  | 55 | 33
Net (charge-offs) recoveries |  | 36 | 33
(Recovery) provision |  | (87) | (81)
Balance at end of period |  | 586 | 1,190
Quantitative allowance |  |  |
Collectively evaluated |  | 586 | 1,190
Total quantitative allowance |  | 586 | 1,190
Residential Mortgage Jr. | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 26 |
HELOC |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 13,325 | 16,698
Charge-offs |  | (218) | (169)
Recoveries |  | 257 | 417
Net (charge-offs) recoveries |  | 39 | 248
(Recovery) provision |  | 175 | (943)
Balance at end of period |  | 13,671 | 16,003
Quantitative allowance |  |  |
Collectively evaluated |  | 12,301 | 14,210
Individually evaluated |  | 1,357 | 165
Total quantitative allowance |  | 13,658 | 14,375
Qualitative allowance |  | 13 | 1,628
HELOC | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 132 |
Residential Construction |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 4,997 | 4,914
Recoveries |  | 3 | 1
Net (charge-offs) recoveries |  | 3 | 1
(Recovery) provision |  | 614 | (1,023)
Balance at end of period |  | 5,616 | 3,892
Quantitative allowance |  |  |
Collectively evaluated |  | 5,616 | 3,830
Total quantitative allowance |  | 5,616 | 3,830
Qualitative allowance |  |  | 62
Residential Construction | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 2 |
Other C&D |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 37,593 | 67,197
Charge-offs |  | (4) | (10)
Recoveries |  | 234 | 201
Net (charge-offs) recoveries |  | 230 | 191
(Recovery) provision |  | (14,438) | (12,051)
Balance at end of period |  | 25,358 | 55,337
Quantitative allowance |  |  |
Collectively evaluated |  | 24,770 | 55,234
Individually evaluated |  | 588 | 103
Total quantitative allowance |  | 25,358 | 55,337
Other C&D | Initial PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 86 |
Other C&D | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 1,887 |
Consumer |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 23,149 | 26,562
Charge-offs |  | (2,661) | (2,149)
Recoveries |  | 532 | 510
Net (charge-offs) recoveries |  | (2,129) | (1,639)
(Recovery) provision |  | 828 | 2,960
Balance at end of period |  | 21,899 | 27,883
Quantitative allowance |  |  |
Collectively evaluated |  | 21,899 | 21,334
Total quantitative allowance |  | 21,899 | 21,334
Qualitative allowance |  |  | 6,549
Consumer | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 51 |
Multifamily |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 4,921 | 7,887
(Recovery) provision |  | (1,444) | (2,003)
Balance at end of period |  | 3,903 | 5,884
Quantitative allowance |  |  |
Collectively evaluated |  | 3,903 | 5,884
Total quantitative allowance |  | 3,903 | 5,884
Multifamily | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 426 |
Municipal |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 565 | 1,510
(Recovery) provision |  | 42 | 34
Balance at end of period |  | 607 | 1,544
Quantitative allowance |  |  |
Collectively evaluated |  | 607 | 817
Total quantitative allowance |  | 607 | 817
Qualitative allowance |  |  | 727
CRE Owner Occupied |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 61,794 | 97,104
Charge-offs |  | (371) | (27)
Recoveries |  | 314 | 333
Net (charge-offs) recoveries |  | (57) | 306
(Recovery) provision |  | (16,641) | (6,750)
Balance at end of period |  | 49,094 | 90,660
Quantitative allowance |  |  |
Collectively evaluated |  | 45,302 | 83,115
Individually evaluated |  | 2,960 | 3,315
Total quantitative allowance |  | 48,262 | 86,430
Qualitative allowance |  | 832 | 4,230
CRE Owner Occupied | Initial PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 1,479 |
CRE Owner Occupied | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 2,519 |
Non Owner Occupied CRE |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 79,649 | 124,421
Charge-offs |  |  | (194)
Recoveries |  | 69 | 321
Net (charge-offs) recoveries |  | 69 | 127
(Recovery) provision |  | 13,945 | (16,989)
Balance at end of period |  | 96,360 | 107,559
Quantitative allowance |  |  |
Collectively evaluated |  | 95,051 | 100,267
Individually evaluated |  |  | 35
Total quantitative allowance |  | 95,051 | 100,302
Qualitative allowance |  | 1,309 | 7,257
Non Owner Occupied CRE | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 2,697 |
C & I |  |  |
Allowance for credit losses |  |  |
Balance at beginning of period |  | 28,167 | 46,217
Charge-offs |  | (2,159) | (705)
Recoveries |  | 1,309 | 1,151
Net (charge-offs) recoveries |  | (850) | 446
(Recovery) provision |  | (3,191) | (13,197)
Balance at end of period |  | 37,300 | 33,466
Quantitative allowance |  |  |
Collectively evaluated |  | 32,476 | 26,673
Individually evaluated |  | 3,358 | 399
Total quantitative allowance |  | 35,834 | 27,072
Qualitative allowance |  | 1,466 | $ 6,394
C & I | Initial PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 7,569 |
C & I | Initial Non PCD Allowance |  |  |
Allowance for credit losses |  |  |
Balance at end of period |  | 5,605 |
Atlantic Capital |  |  |
Allowance for credit losses |  |  |
Charge-offs | $ (22,100) |  |
Atlantic Capital | Unfunded Commitment |  |  |
Allowance for credit losses |  |  |
(Recovery) provision |  | $ 3,400 |

X
- Definition Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities. This amount is net of reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts. + References No definition available. + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were individually and collectively evaluated for impairment. + References No definition available. + Details
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- Definition Amount of qualitative allowance for credit loss on financing receivable. + References No definition available. + Details
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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
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